CVE-2025-20352
Cisco IOS and IOS XE Software SNMP Denial of Service and Remote Code Execution Vulnerability
IN CISA KEV
Cisco IOS and IOS XE contains a stack-based buffer overflow vulnerability in the Simple Network Management Protocol (SNMP) subsystem that could allow for denial of service or remote code execution. A successful exploit could allow a low-privileged attacker to cause the affected system to reload, resulting in a DoS condition, or allow a high-privileged attacker to execute arbitrary code as the root user and obtain full control of the affected system.
- Vendor
- Cisco
- Product
- IOS and IOS XE
- CVSS
- No score recorded (no NVD record loaded for this entry)
- CWE
- CWE-121
- Published
- Not recorded
- NVD modified
- Not recorded
CISA KEV
- Date added
- 2025-09-29
- Due date
- 2025-10-20
- Ransomware use
- Unknown
- Required action
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
EPSS
40.2% chance of exploitation in the next 30 days (percentile 98th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.